Auditing adn filing apparatus.



C. F. LAGANKE.

AUDITING AND FILING APPARATUS.

Patented Aug. 7, 1917.

I4 SHEETS-SHEET I.

APPLICATION FILED JULY 1 1912.

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APPLICATION FILED JULY l, 1912. 1 ,235 ,701 Patented Aug. 7, 1917.

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C. F. LAGANKE.

AUDITING AND FILlNG APPARATUS.

APPUCATION FILED JULY I; I912. 1 ,235,701 Patented Aug. 7,1917.

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C. F. LAGANKE. AUDITING AND FILING APPARATUS.

APPLICATION man JULY 1. 19:2.

1,235,701. Patented Aug. 7, 1917.

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Patented Aug. 7, 1917.

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C. F. LAGANKE.

AUDITING AND FILING APPARATUS.

APPucAnou mw )ULY 1. m2.

Patented Aug. 7, 1917.

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Patented Aug. 7, 1917.

I4 SHEETS-SHEET 9.

C. F. LAGANKE.

AUDITING AND FILING APPARATUS.

APPLICATION FILED IULY 1. I912.

1,235,701. Patented Aug. 7, 1917.

I4 SHEETS--SHEET ll.

C. F. LAGANKE.

AUDITING AND FILING'APPARATUS- APPLICATION-"LEO- IULY 1. I912.

Patented Aug. 7, 1917.

I4 SHEETS-SIIEET l2.

C. F. LAGANKE.

AUDITING AND FILING APPARATUS.

AFPHCATION [ILED JULY 1. 1912.

1,235,701. PatentedAug. 1.1917.

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AUDITING AND FILING APPARATUS.

APPLICATION FILED JULY I. I912.

1,235,70 1 Patented Aug. 7, 1917.-

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III! III! L'IIIIIMN v lnmufimiim UNITED STATES PATENT OFFICE.

CHARLES F. LAGANKE, 0F CLEVELAND, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE MGCASKEY REGISTER COMPANY, (INCORPORATED IN 1914,) OF ALLIANCE, OHIO,

A CORPORATION OF OHIO.

AUDITING AND FILING APPARATUS.

Specification of Letters Patent.

Patented Aug. 7, 1917.

To all whom it may concern:

Be it known that I, CHARLES F. LAGANKE, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented new and useful Improvements in Auditing and Filing Apparatus, of which the following is a specification.

This invention relates to combined filing and auditing apparatus for filing and storing papers, bills and like documents and for auditing and totaling amounts.

For the purpose of illustration, 1 have, in the accompanying drawings, shown and herein described one form of apparatus embodying my invention.

Figure 1 is a perspective view of a mech anism or apparatus embodying my invention.

Fig. 2 is a side elevation of a portion of the apparatus, the near side of the casing for the auditing mechanism being omitted.

Fig. 3 is a side elevation of the n1ech anism from the side opposite to that shown partly in section,

in Fig. 2, the cabinet for the filing frames being shown in dotted lines.

Fig. 4 is a front elevation of the auditing mechanism, the front walls of its casing being omitted and the side and top walls thereof being shown in dotted lines.

Fi 5 is a fragmentary side elevation showing the registering or totaling wheels, the transfer or carrying-forward mechanism, the transaction-printing mechanism, and parts of the total printing mechanism.

Fig. 6 is a transverse sectional view on the hue 6-6 of Fig. 5.

Fi 7 is a transverse sectional View on the line 7-7 of Figs. 3 and 5.

Fig. 8 is a fragmentary side elevation,

of the transaction printing mechanism, the register-wheel operating bars, and the locating and releasing devices therefor.

Fig. 9 is a sectional view on the line 99 of Fig. 8.

Fig. 10 is a fragmentary detail perspective view of the restoring device for the registenwheel operating bars and its Sliding carrier, and the paper web feeding mechanism.

Fig. 11 is a top plan view of the keys and key board showing the position of the keys after clerk No. 34 has set the keys to charge $958.76 against the customer whose account is numbered 567.

Fig. 12 is a top plan view of the forward portion of the operating bars when posi tioned for the above transaction.

Fig. 13 is a bottom plan view of the key board casing and operating bars in normal position showing the printing characters thereon.

Fig. 1 is a view similar to Fig. 13 with the bars in the position shown in Figs. 11 and 12.

Fig. 15 is a side elevation of the registering wheels, the driving gears therefor, and the transfer or carrying-forward mechanism.

Fig. 16 is a perspective view of parts of the transfer or carrying-forward mechanism.

Fig. 17 is a section on the line 17-17 of Fig. 15.

Fig. 18 is a section on the line 18-18 of Fig. 15.

Figs. 19 and 20 are detail views of the pivots for. the thrust members of the transfer or carrying-forward mechanism.

Fig. 21 is a perspective view of the paper strip feeding rollers and the paper cutter.

Fig. 22 is a longitudinal sectional view.

of the paper strip feeding rollers.

Fig. 23 is a sectional view on the line 23-23 of Fig. 22.

Fig. 24 is a perspective view of the bill or slip-receiving and positioning plate.

Fig. 25 is a fragmentary side elevation of the apparatus showing in detail parts of the interlocking mechanism between the slip-holding frames and the auditing mechanism.

Fi 26 is a plan view of parts of the inter ocking mechanism for the operating bars.

Fig. 27 is a side elevation of the total printing mechanism in operative relation to the registering wheels.

Fig. 28 is a plan view of the printing mechanism.

Fig. 29 is a side view of the printing mechanism in operation, the supporting plate on the near side being removed.

Fig. 30 is a section on the line 30-30 of Fig. 27.

Fig. 31 is a detail view of the platen for the printing mechanism.

Fig. 32 is a perspective view of the bill or strip-positioning frame for the total printinmec'ha-nism.

- ig. 33 is across section of the main rock shaft and the release dog for the transaction printing mechanism.

Fig. 34 is a fragmentary view illustrating the construction of the dogs carried by each of the register wh'eel operating bars.

In the drawings A indicates as an entirety a series of pivotally mounted holders or frames of any usual or preferred form of construction for receiving and dctaclrably holding papers, paper slips or bills. The holders or frames are preferably de'tachably mounted in a suitable casing a and adapted to swing relatively to each other from a substantially vertical position to a substantially horizontal position, and vice versa. The holders or frames and the pivotal supports therefor, selected for illustration herein, may in general mnstruction, be similar to the holders and their supports shown and described in U. S. Patent No. 853,651, dated May 14:, 1907-, to Staples and Potter, and therefore further description thereof will not be necessary.

B indicates as an entirety the supporting frame-work for the auditing mechanism, preferably fixed toone side of the casing a, by one or more bolts 2-. 2 indicates a series of spacing members, each of which preferably comprises ja sleeve, surrounding a bolt 2 to provide a space between the supporting frame-work B and the casing a. Thiseonstructi-on provides a simple form of connection with the casing 11 and also permits certain parts of the apparatus to be movably mounted on that face of the framework B adjacent to said casing, as will be later described. The bottom of the casing a may be extended laterally, as shown at a, to assist in supporting the frame-Work B and auditing mechanism. The frame-work B preferably includes a main frame B and a case 13 having side and end walls, which cover the mechanism and protect it from dust and damage.

C indicates as an entirety the registering or adding mechanism; D the means for operating the registering or adding mechanism; E the control means which throw into operation various parts of the apparatus and return the register operating mechanism and keys thereof to normal or zero position; F the transfer or carrying forward devices for the registering or adding mechanism; G the total printing mechanism; H the indie vidual transaction printing mechanism; I the paper strip or web supply and feeding or advancing means; and J the register Wheel resetting devices.

Of the registering mechanism C, 3, 3, indicate a pair of spaced supportin plates, which are normally mounted bn e main frame B 3* indicates a series of bolts or rods preferably fixed at their inner ends to the inner supporting plate 3 and extending outwardly at right angles thereto. The free ends of these bolts extend through openings therefor formed in the outer plate 3, and are screw-threaded to receive nuts 3". As shown at 3, the opposite ends of these bolts are shouldered to form abutments against which the plates 3 are pressed when the nuts 3 are tightened against the adjacent face of the outerplate 3. The shoulders of the bolts thus serve to space the plates apart parallel to each other. 3" indicates a of screws extending through openings formed therefor in the inner plate 3 and adapted to suitable screw-threaded openings in the main frame B. These screws operate to removably secure the inner plate 3 to the frame B. The form of construction just described permits the outer plate 3 to be removed from the free ends of the bolts '3 without detaching the inner plate from the frame B; it also permits both plates, and the mechanism arranged between them, to be detached from the main frame B as a unit. The outer plate 3 is preferably of skeleton form to expose the mechanism arranged between the plates and also to assist in decreasing the weight of the apparatus.

3 indicates a shaft that is mounted in suitable alined bearings formed in the supporting plates 3. Near its inner end this shaft is provided with an integral collar or annular rib 3. 3 indicates a retaining plate fixed to the inner plate 3 by screws 3. This plate is formed with an opening, through which the shaft 3 extends, and an annular recess or socket 3 to receive the collar 3 By this form of construction it will be seen that the bottom wall of the recess 3 forms a bearing shoulder for the collar 3 and serves to prevent endwise movement of the shaft 3 as well as maintaining its inner end in the bearing therefor in the inner plate 3-. 3 indicates a groove or recess extending longitudinally of the shaft, the purpose of which will be later described. The shaft 3 is normally stationary, but may be rotated to reset the registering wheels, as hereinafter set forth.

4 indicates a series of registering or adding wheels arranged side by side and loosely mounted on the shaft 3, whereby they may be rotated together 'or independently. The wheels 4 preferably rotate in an anti-clockwise direction (as viewed in Figs. 2, 5 and 15) to register or add. There is preferably one wheel 4: for each numeral or digit in a line of figures representing an amount which the machine may be called upon to register or add.

In the illustrated embodiment of my invention I have adapted the machine for registering or adding an amount which may consist of five figures or less, whereby amounts aggregating 99,999 can be registered or added. It will, however, be clearly understood that a greater or less number of register wheels 4 could be used to adapt the apparatus to any conditions re quired. As t he invention is shown as applied to mercantile business and adapted for totaling and recording monetary amounts, the innermost registering or adding wheel 4 (or that wheel nearest the main frame B) may be termed the cen wheel, and the remaining wheels 4 from right to left (in Fig. 6) the tens of cents wheel, the dollars wheel, the tens of dollars wheel, and the hundreds of dollars wheel, respectively, said wheels being capable of adding or registering amounts aggregating $999.99.

The series or set of registering wheels 4 may be used for recordin each sale and totaling all of said sales fbr any specified period--, for instance one day or one week; or they may be used for recording and totalin a particular class of sales, such as credit sales. In the latter event, an additional set of registering wheels can he used for recording and totaling cash sales and other sets may be added for particular purposes, as may be found necessary in any particular or desired application of the invention.

Each of the registering wheels comprises a disk-like structure provided with ten radially projecting members 4 that carry the characters 1, 2, 3, 4:, 5, 6, 7, 8, 9, 0, seriatim, on their respective faces 4". Preferably each face is provided with a recess or depression 4 in which a character is mounted in order that the walls of the recess may protect the character from damage.

The projecting members 4 are preferably spaced from each other uniform distances in order that they may serve as gear teeth for rotating the wheels 4 on the shaft 3.

4 indicates an annular recess preferably formed in one side of each register wheel 4. 4 indicates a pawl pivotally mounted in each of said recesses 4. 4 indicates a light spring normally operating to press the nose or free end of the pawl 4 toward or into engagement with the shaft 3. The pawl 4 rides on the shaft 3 past the recess 3 therein during the normal operation of the register wheels 4. However, as will be later described, when the shaft 3 is rotated in an anti-clockwise direction (as viewed in Figs. 2 and 5) the front wall of the recess 3 will engage the end of the pawls 4 and thus rotate the register wheel or wheels. The object of this operation is to re-set all of the register wheels at zero. As there is only one recess 3 in the shaft 3 and each pawl 4 is connected to an adjacent register wheel 4- at the same point with reference to its 0 character, it will be understood that when the shaft 3 is rotated, the wall of the recess 3, operating through the pawls 4, will move the wheels 4 to the starting or zero position with their 0 characters opposite or alined with each other. In case the register wheels 4 are in different positions, angularly with reference to each other, the front wal of the recess 3 will pick up each pawl 4 successively until all are carried around by the shaft 3. The shaft 3 is then rotated far enough to bring the characters 0" to the zero point. The recess 4 in each register wheel 4 permits the latter to be placed close together side by side on the, shaft 3.

5 indicates a spacing device which ma be interposed between the tens of cents w eel and the dollars wheel on the shaft 3 to slightly separate these wheels from each other. In printing the amounts to be added and the total amount registered or added, the space between these two wheels forms a convenient way of indicating to the eye the cents columns and the dollar columns, such space serving therefore as the equivalent of a decimal oint. The spacing device 5 is preferably oose upon the shaft 3.

Of the register operating means D, 6, 6, indicate a pair of vertically arranged plates su ported on and extending from the frame B at right angles thereto. These plates are formed with a series of slots or guide open ings 6", the openings in the plate 6 alining with the openings in the plate 6. The plates 6, 6, may be secured to the main frame B in any well known manner.

7 indicates a series of operatin members, preferably comprising bars slidab y mounted in the guide openings 6", one of said bars being provided for each of the registering wheels 4 and preferably arranged in the same vertical plane therewith. are preferably all of the same length and extend forward beyond the front end walls of the casing B. The bars 7 are normally arranged in their forward or zero position, as shown in Figs. 1, 2, 5' and 13, side by side, and are free to be moved in a positive direction, or toward the rear end of the frame B. Preferably one wall of each guide openin 6" is provided with an off-set 6 which ts into a groove 7 formed in and extending longitudinally along one side wall of the adjacent slide bar 7. The off-set 6 and walls of the grom'e 7 serve to maintain the bars in a horizontal position at all times.

indicates a groove recess formed in the upper edge or surface of each bar 7. 7 indicates a series of dogs or teeth pivotally mounted at their front ends on transverse shafts or pins 7 in the recess 7". Each of said dogs 7 is formed with a cut-away portion in its rear wall to form upper and lower rearward" projecting arms 7 which engage a stop pin 7 extending across the path of movement of said arms 7. The-upper 'arm' These bars 7 engaging said pin limits the downward movement of the dog 7 itild thelower :irin 7 eiigaging the pin llmits the upward movement of tie dog; 7 indicates a series of springs,- one for each do 7 normally pressing the dogs 11 iward1y;iii1t permitting han to be .presse downwardly substantially flu'sh with the upper Sillfflb b the bars' 7 for a purpose to e presently ascribed.-

8 indicates a series of. gears freely mounted on a transi'e'rse shaft 8* aiid meshing with the teeth or memb rs 4 of the register wheels 4. This shaft 8* is arraiigied parallel to the shaft 3 and is refera 13 mounted in the side plates 3; T 'e gearss are preferably Separated from each other by washers 8" so that one will not tend to rotate ah adjoining gear b' frictional co'ii tact. There is one gear 8 or each register wheel 4, and sai gear is arranged so that its teeth lie in the path or n'i o'v eriieilt of the dogs or rack teeth 7 of adjacent slide bar 7. this construction it Will be under stood that when a slide bar 7 iiioves rearwardly, its dogs 7 will engage the teeth of the adjacent gears, and rotate it, which in turn will rotate the adjacent registering wheel 4'. In the return or forward movement of the bar .7 the dogs 7 ride the teeth of the gem-j 8, that is, the teeth press the dogs downwardly against the tensionof the spring 7 and permit theiii to pass the gear 8 without rotating it. u

8 indicates a series of locating devices that engage the gears 8 and serfve as yielding s'to'ps, causing them toalway's assume definite positions when coming to a state of rest, and also prei entingaccidehtal rotation of the gears 8. here is a l'oc'atin device 8 for each of the gears 8; Eac of these devices preferably comprises an arm 8 freely pivoted upon a statioilary shaft 8 carried by the frame work B of plates 3; a disk or roller 8; which engages the opposing walls of adjoining teeth of an adjacent ear 8, and a spring 8 which operates to y eldingly maintain the roller againsttIife adJacentgear. The effect of this construction s to stop the gears at definite positions prevent their accidental rotatibn from one position to another, either due to' momentum iinparted to them when operated, or other causes, and also to prevent backward movement of the gears 8, especially durin the return of the bars 7. As win be w ereloha, the locating devices 8, through their engagement with the gears 8, also serve indirectly to prevent rotation of the register Wheels 4:, except during their normal positive operation as well as to stop theni at definite positions with their numerical characters in aliriemerit with each other at the end of each operation.

9" indicates a series of devices, .onefor each slide rack 7 which serve as locating, and

16d; iliid release iheans therefor. Each of these devices preferably comprises a le er 9 pitched (iii a transverse shaft 9 arranged beldw the bars 7, the opposite ends of the shaft b'eing' fiibuiit'ed iii a pair bf auxiliary side plates 9 The plates 9* are preferably reniiitabl mounted on the frame B and releiti-Ve'ly th each Uther similar to the side plates 3-. one ans 9 of each lever 9 extends upwardly and slightly rearwardly of its pivot into engagement with iio't'ch'es 7", formed in welders; ed of the ad aeht bar 7. Each aiin 9 is pre rably provided with an antifi'ictioii roller 9;

The other ailii', 9', of each lever 9 depends dbhvriivardly and rearwardly and is preferably sub's'taiitially ai'c sliaped. Intermediate of its length, each arm 9 is provided With a cam 9 the purpose of which will be later deserib'u.

9" indicates a forward extension carried byeachlet'e'r 9 and preferably formed integrirl therewith. To the free end of each extension is attached one end of a tension spring 9; the opposite end of said spring being attached to a fixed transverse rod 9. These spjiligs operate to maintain the arms 9 in yi'el ding engagement with the walls of the hatches 7". As will be seen, each bar ldca'tiiig arm 9 serves td locate or stop the adjacent bar at predetermined positions, and by reason of the arrangement of the arm relative to its pivot,- it also operates to stop the bar 7 against rearward 'or retrograde mo eineiit. I preferably provide each bar 7 with i1 'siifiicient number of dogs 7 and nbt'ches 7*,1 so that when a forward or positiV iiioyeriieiit is im arted to a bar 7 it will rotate the adjacent register wheel a from one to ninepoints, which latteras will be readily understood, will be the highest number any hhe wheel can register at single oper atibn; I

10 indicates the k ys for operating the slide bars 7. Each 0 the keys comprises a standard 10" fixed to the forward end of an adjace'iit her 7 and carries at its upper end a head or finger piece 10 by means of which it can be grasped and conveniently operated. The standards 10 are preferably bent intermdiate their ends at Varying angles, relatii e to each other, as clearly 'shownin Fig. 4, in order that their finger pieces l0 can be uniformly separated from each other a sufiicieiit distance to permit the operation of the keys independently.

11 indicates a key board for the auditing or registering mechanism. It comprises a plate formedwith series of parallel slots 11, oiie for each key; extending in a longitudinal direction. The key board plate 11 is. mountdohthe upper edges of the auxiliary sideplates; 9' these plates having upwardly' eitehdiflg diyergiii walls 9 which support the p'late 11 iii a orizbir'thl plane lid -' said characters on slightly above the slide bars 7. As will be understood from the drawings, the keys 10 project through the slots 11, so that their finger pieces are above the key board 11.

The slots 11 are of a length to ermit the complete stroke of each bar 7. referably, their opposite end walls serve as stops to limit their movement in the positive or forward direction, and in the negative or rear ward direction back to zero position. The characters 0 to 9 may be mounted at one side of each key guide slot. Said characters are arranged in rows one behind the other in ascending series from the front end of the adjacent slot to its rear end,- being separated from each other a distance equal to the distance between adjoining notches 7" in the bars 7. These characters serve as visual guide or signal devices to determine the length of stroke required to slide a bar to effect the registering of a particular number. Preferably, one side wall of each slot 11 is notched to form abutments, one abutment being opposite each character, as shown at 11*. These abutments serve as stops for the keys 10 when moved to a point opposite any numeral. In the construction of the apparatus very slight play may be provided between the bars 7 and their guides 6", which play will'permit the keys 10 to be pressed laterally into sliding engagement with either side wall of the slots 11*. Hence, with a little practice the operative may learn to press the keys near the end of their strokes toward the notched wall and eventually bring them into ment 11 opposite the desired character. This construction facilitates the operation of the keys 10 and produces accuracy as well as rapidity of operation. As shown at 11 suitable closing plates forming side and front walls for the front ends of the slide bars may be provided, the front wall plate extending inwardly from the front edge of the keyboard 11. and downwardly to cover the entire front end of the mechanism.

12 indicates a plate arranged behind the keyboard and stationarilv mounted on the upper edges of the auxiliary side plates 9. As shown in the drawings. this plate is superposed immediately above the slide bars 7. It is formed with a sight opening or openings 12 which extend tronsversely across the upper edges of the bars 7 and form what may be termed a reading line. As shown at 13 (Figs. 11 and 19.), the upper edge of each bar 7 is provided with the characters 0 to 9, seriatim, one behind the other, but in reverse order to the arrangement of the keyboard 11. The characters on one bar are arranged opposite similar characters on an adjoining bar. The characters 13 are arranged on the bars at such position relative to the opening 12 that when the bars are at zero. the charengagement with the abutacters 0 carried thereby will be exposed at the reading line through said sight openings 12. As the slide bars 7 are moved in the positive direction, the characters 13 thereon will be exposed successively through said openings. These openings 12 thus provide convenient means for dis laying to the eyes of the operative the num er at the end of one operation set up to be registered or accumulated. If desired, the operative may watch the figures 13 move below the opening 12" until the figures he desires to register appear and thereby determine the length of movement of the bars 7. In such case the operative will not watch the characters on the keyboard, but will determine the throw of the bars 7 by the characters 13.

14 indicates a name plate arranged adj acent to the reading line sight openings 12. It may be formed with one or more openings in which may be arranged a name card or cards designating the nature of the subject matter to which the figures or characters exposed to view relate, the words Amount charged being dis layed in one of the openings (see Fig. 11?.

Of the control means E, 15 indicates a pair of supporting plates preferablv of substantially rectangular shape. These plates are, by preference, removably fixed to the main frame B and also supported relatively to each other in a manner similar to that shown and already described in connection with theplates 3. The plates 15 are arranged below the slide bars 7 and are formed with alined openings which provide bearings for a stud shaft 16.

As will be understood from Figs. 3, 4, 8 and 25, the shaft 16 extends through the main frame B and has fixed to its inner end an operator or arm 17. At its upper end, the arm 17 is provided with a handle 17' whereby it can be conveniently operated forwardly and rearwardly (see dotted lines in Fig. 3) to rock the shaft 16. This 0 orator is preferably mounted on that si e of the apparatus adjacent to the casing a in order that the operative can conveniently manipulate a credit slip or bill with his left hand during the printing operation, as will be later describe 17 indicates a link pivoted at one end to the frame B and arranged to swing as shown in dotted lines in Fig. 3. At its opposite end the link 17" is pivoted to the front end of a second link 17". This latter link is pivotally connected at its rear end to. a reciprocating pusher or bar return-member 18.

17 indicates a connecting device between the operator 17 and swinging link 17 for moving the latter forwardly and rearwardly. This device preferably comprises a pair of plates or bars 17 17, arranged on opposite sides of the link 1 The bars are pivotally connected at 17" to the opposite sides of the operator 17, and also connected together, with a spacing washer between them, at their free or rear ends by a screw or bolt 17' in a well known manner.

17 indicates alined elongated slots (only one of said slots being shown) formed in the bars 17fand arranged to receive pins or studs 17 projecting laterally from opposite sides of the link 17. these pins 17 lie in the path of movement of the end wa.lls of the slots 17 formed in the bars 17, when the latter are moved in one direction or the other, one of said end walls will engage the pins 17 and swing the link about its pivot, which link in turn, operating through the link 17", will operate the pusher 18. As will be understood, the slots 17 permit the o crating arm 17 to move a predetermined 'stance in either direction without imparting movement to the links 17 and 17", and the pusher or bar restoring device 18.

6 indicates an elongated slot formed in the main frame B and extending in a horizontal direction rearwardly from the rear ends of the slide bars 7. This slot forms an opening through which the stud or pivot between the link 17 and pusher 18 extends and moves. 18 indicates ides fixed to the frame B to guide the side bar return member 18 forwardly and backwardly. These guides may consist of two spaced plates arranged on opposite sides of the slot 11 and provided with flanges 18" which fit theupper and lower rabbeted edges of the pusher 18, thereby slidably supporting the pusher on the frame B. A washer 18 may be interposed between the link 17 and adjacentface of the frame to prevent binding as the pusher moves from end to end of the slot 6.

18 indicates a s coiled type, for hol ing the operator or arm 7 in its rearmost position (see Fi 1, 2 and 3), one end of the spring being fired to a stud or hook 18 on the frame B and its opposite end being connected to the arm 17. The spring is put under tension when the arm 17 is moved forwardly and is preferably of sufiicient strength to return the arm to its first position.

The pusher 18 is arranged normally at the rear end of the slot 7; and is movable forwardly by the link mechanism and the operator 17. The pusher 18 may comprise a carrierplate 18' and a bracket or arm 18, the base of which is fixed to the carrier plate, arranged in a horizontal lane co-incident with the slide bars 7, w ereby said arm will engage the rear ends of those slide bars, which are operated, and push them back to zero position. 18 indicates a rod or plate for bracing; thefree end" of the bracket 18. 118 indicates a depending arm preferably formed integral ring, preferably of the with base of the bracket 18. The lower end of this arm is bent inwardly and is preferably bifurcated, as shown at 18", to provide supports for a pivoted pawl 18.

19 indicates a device for moving the 10- cating and locking means out of engagement with the slide bars 7, whereby the latter can be returned to normal position. This device preferably comprises a swingable frame fixed to and operated by the rock shaft 16. This frame may consist of a pair of arms 19" fixed at their inner ends to the shaft 16 and connected together by one or more tie rods 19". 19" indicates an antifriction roller loosely mounted between the free ends of the arms 19 and arranged to engage with and ride the cam 9 The inner end of each arm 19 may be formed with an opening to receive a set screw 19' adapted to connect it to the shaft 16. The normal position of the frame 19 is shown in Fig. 8. Its free end swings downwardly when the operator 17 is moved forwardly. During such movement, the roller 19 engages the cam 9 and swings the lever arms 9' forwardly, thus releasing or disengaging the arms 9 from the notches 7" of the slide bars 7. Following the release of the bars 7, the pusher 18 enages the rear ends of those ba rs which have been operated and returns them to normal position, it being understood, of course, that the arrangement of the link mechanism between the operator 17 and pusher 18 is such that the engagement of the end walls of the slots 17 with the pins 17 to operate the pusher, does not occur until after the release of the slide bars 7.

As shown in the drawings, those portions of the depending lever arms 9 below the cams 9 are elevated, with reference to those portions thereof above the cams, so that during the continued downward movement of the frame 19, the locking arms of the levers will be maintained out of engagement with the slide bars 7 until the latter have been returned to normal position.

I preferably provide the apparatus with means which compel a full stroke of the operator 17. Of these means 20 indicates a curved rack fixed, as by suitable screws or bolts 20, to the inner face of the frame B. 20' indicates a plate pivoted at 20 to one face of the arm 17, and provided with two dogs or pawls 20 which project from opposite side edges thereof. Extending laterally from said plate is a pin 20 which projects through a curved slot 1'? formed in the operator 17. The fulcrum for the plate 20 is so arranged that when the pin E20 is at one end of the slot 17 one dog will engage the rack, and when the pin is at the o posite end of said slot, the other do wil engage the rack. 20 indicates a p unger or thrust device, slidably mounted in a casing 20 which is carried by the said operator 17, 

